Jeffrey Lazarus is a full professor at the CUNY Graduate School of Public Health and Health Policy and the head of the Public Health Liver Group at the Barcelona Institute for Global Health (ISGlobal). He serves as the director of the Global Think-tank on Steatotic Liver Disease and head of MASH Cities. He is the author of more than 500 publications, including most recently as the chair of the Lancet Europe series on chronic liver disease, and is principal investigator of multiple global studies and clinical trials. In 2023 he was the recipient of the American Liver Foundation Distinguished Scientific Achievement award and in 2025 the American Association of Clinical Endocrinology (AACE) Public Service Award. As part of his efforts to recognise MASLD/MASH internationally, together with leading organisations he led the Global Position Statement on a World Health Assembly resolution on steatotic liver disease.